The coal sample to be ground is introduced into the pulverizing chamber through a hopper. The material travels through a helical screw and it is uniformly delivered into the grinding chamber.
The rapidly rotating hammer’s centrifugal force disintegrates material by shearing action between the fixed toothed circular inserts and rotating hammer arms.
As particles get smaller than the size of underneath sieves, the material passes through the sieve mesh and gets collected in a stainless steel container.
No dust is dissipated in the process. Need for separate dust extraction is eliminated and no sample is lost.
Small space separating the toothed circular inserts and rotating hammer arm plates determine the product fineness.